Development of a computer assisted system aimed at RFA liver surgery

Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society
Laurent MundeleerNadine Warzée

Abstract

Radio frequency ablation (RFA) is a minimally invasive treatment for either hepatocellular carcinoma or metastasis liver carcinoma. In order to resect large lesions, the surgeon has to perform multiple time-consuming destruction cycles and reposition the RFA needle for each of them. The critical step in handling a successful ablation and preventing local recurrence is the correct positioning of the needle. For small tumors, the surgeon places the middle of the active needle tip in the center of the tumor under intra-operative ultrasound guidance. When one application is not enough to cover the entire tumor, the surgeon needs to repeat the treatment after repositioning of the needle, but US guidance is obstructed by the opacity stemming from the first RFA application. In this case the surgeon can only rely on anatomical knowledge and the repositioning of the RFA needle becomes a subjective task limiting the treatment accuracy. We have developed a computer assisted surgery guidance application for this repositioning procedure. Our software application handles the complete process from preoperative image analysis to tool tracking in the operating room. Our framework is mostly used for this RFA procedure, but is also suitable for a...Continue Reading

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Citations

Feb 23, 2011·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·M PeterhansS Weber
Sep 2, 2009·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Laurent MundeleerNadine Warzée
Nov 20, 2009·IEEE Transactions on Bio-medical Engineering·Ziv YanivFilip Banovac
Jul 5, 2011·Drugs & Aging·Ulrich ThiemLudger Pientka
Feb 25, 2017·International Journal of Computer Assisted Radiology and Surgery·Marc HerrlichRon Kikinis

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